Health Care

Lilly’s Covid-19 antibody reduced viral load faster than placebo, interim Phase II data show

One of the companies developing a novel antiviral drug against the virus that causes Covid-19 has released proof-of-concept data indicating a large reduction in risk of hospitalization among those receiving the drug compared with patients in the placebo group.
Indianapolis-based Eli Lilly announced Wednesday data from an interim analysis of its Phase II BLAZE-1 trial of LY-CoV555 – a monoclonal antibody designed to neutralize the SARS-CoV-2 virus – in patients with mild to moderate disease in the outpatient setting. The data showed that while patients in the treatment and placebo arms mostly showed nearly complete viral clearance by day 11, those in the 2,800mg dose group achieved it earlier, by day 3, with a reduced proportion of patients showing persistently high viral load later on. The 302 patients receiving the drug at that dose showed a 1.7% rate of hospitalization and visits to the emergency room, compared with 6% of the 150 receiving placebo, translating into a 72% reduction in risk, the company said. However, while the 2,800mg dose reached the study’s primary endpoint of change in baseline viral load at day 11, the other dose levels – 700mg and 7,000mg – did not.
Lilly said it plans to “quickly” publish the results in a peer-reviewed journal and discuss next steps with regulators. The trial is still ongoing and is also testing LY-CoV555 in combination with another antibody, LY-CoV016, which binds to a different epitope of the SARS-CoV-2 virus’ spike region. The trial’s target enrollment is 800 patients.
Shares of Eli Lilly (NYSE: LLY) were up about 1% on the New York Stock Exchange Wednesday morning.
“These interim data from the BLAZE-1 trial suggest that LY-CoV555, an antibody specifically directed against SARS-CoV-2, has a direct antiviral effect and may reduce Covid-related hospitalizations,” said Daniel Skovronsky, Lilly’s chief scientific officer, in a statement. “The results reinforce our conviction that neutralizing antibodies can help in the fight against Covid-19.”
Indeed, multiple other companies are taking the antibody route as well. A notable player is Tarrytown, New York-based Regeneron Pharmaceuticals, which is developing a two-antibody cocktail therapy known as REGN-COV2, currently in Phase III development. That drug is being developed both for infected patients and as a preventive therapy. The company said Monday that it had opened the Phase III RECOVERY trial of the drug in the U.K. The strategy behind using a drug cocktail is similar to the approach used in HIV therapy, in that it makes it more difficult for the virus to develop the resistance mechanisms that can occur when only a single drug is used.
Photo: Maksim Tkachenko, Getty Images

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